Engine heat-radiating structure.



J. W. HASBURG. ENGINE HEAT RADIATING STRUCTURE.

APPLICATION FILEIDMAR. 6. 1906. 987,361, j Patented Mar.21, 1911.

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ENGINE HEAT RADIATING STRUCTURE.

APPLICATION FILED MAR.6,190E.

987,361. 7 Patented Mar.21, 1911.

2 SHEETS SHEBT 2 72-65 66 I7zz/e7zZ0/ Ja/zfa' /9 /640 5 Lug JOHN W.HASBURG, OF CHICAGO, ILLINOIS.

ENGINE HEAT-RADIATING STRUCTURE.

Specification of Letters iatent. Patented Mar, 1911,

Application filed March 6, 1906. Serial No. 304,529.

To all whom it may concern:

Be it known that I, Journ -W. Hasnunc,

a citizen of'the United States, residing at .novel construction andarrangement of the radiating blades or fins and intermediate washers,and to provide a built-up radiator structure easy of application to acylinder body, lending strength to the said body and afiording maximumheat-conductivity between the blade structures and the body.

Other and further objects of my invention will become apparent to thoseskilled in the art from the following description, taken in conjunctionwith the accompanying drawings, wherein;

Figure 1 1s a part-sectional view of an en gine' cylinder having affixedthereto two blades of a built-up radiator structure. Fig. 2 is anelevation of a fragment of one of said blades, the cylinder being shownin section. Fig. 3 is a fragmentary section of a modified embodiment ofmy invention, and

.Fig. 4 a fragmentary elevation thereof.

Figs. 5 and 6 are like views of another embodiment of my invention, and,Fig. 7 is an elevation with part in section, of a fragment of a lockingring shown in Figs. 5 and 6.

Throughout the drawings like numerals of reference refer always to likeparts.

In the drawings, 10 indicates an engine cylinder body, of any size orproportion, ex- I teriorly screw -threaded, as shown at 11,

throughout its length and preferably termina'ting atone end in a flange10' to which may be securedthe cylinder head 12.

The radiator structure is built up preferably of a series of bladeunits, each comprising an annular member, screw-threaded for engagementwith the threads 11, at its inner periphery, and preferably providedwith apertures for air circulation and projections for heatdistribution.

Referring now to Figs. 1 and 2, each blade unit 13 has a thickened baseportion 14, of

size sufficient to include a plurality of the screw-threads on thecylinder, forming a relatively strong central zone, gradually taporingoutward, and each ,blade is provided with apertures 15 and'projections16, the projections and apertures being formed by striking up from theblade semi-circular lips, which constitute the projections 16 and leaveholes 15 in the blade. I

In the assembling of the structure, washers or thin rings 17 preferablyof copper, are provided between the"blade-bases, or enlargements, toreceive the enlargements in contact therewith. Suchrings 17 are inscrew-threaded engagemenflwit-h the cylinder and arepreferably wideenough to form small fins, to project between the tapering parts of theblade enlargements, and they afford means for compensating for slightirregularities of the side surfaces of the blade enlargements shouldsuch exist, and insure proper heat conductivity between the adjoiningblade enlargements.

In Figs. 3 and 4:, I have shown a somewhat similar arrangement, theblades 12% having base enlargements 1%, but having tions 16 and havingsaid projections 16 provided on both sides of the blade to afl'ord amuch larger area of heat disseminating surface than is provided by thearrangement shown in Figs. 1 and-2.

In Figs. 5 and 6 I show an arrangement embodying blades 13, withapertures and projections 15", 16 like those shown in Figs. 1 and 2,theentire blade structure being of uniform thickness and screw-threadedupon the cylinder. Spacing lock nuts or rings 18, each preferablychanneled peripherally, as shown at 19 are provided between the bladesto hold them properly spaced, lock them firmly together, strengthen thecylinder, and, by the large surface exposure ob tained by channeling,afford a good heat disseminating medium. Said nuts or rings 18, in themodified form, are of sufficient width to encompass a. plurality ofthreads of the cylinder, corresponding to the similar formation of theblades 13 of Fig. 1.

In connection with any of these constructions I preferably coat each ofthe parts before assembling, and the whole structure after it isassembled,with cop er, by electro-' plating, for the ,purposes 0 bondingthe parts together for heat communication, rendering the structure moreheat conductive, and giving a pleasing finish. It will be seen that. ineach of these constructions intimate strengthened by the addition of t eencompassing, (peripherally uninterrupted bladeunits," an the bladelocking members, and that ease of construction and facility inassembling are insured. Thus, the screw-- thread feature of my inventionnot only affords a new method of attaching bladesand rings, but it alsorenders a comparative easy passage for heat from the cylinder body tothe blades through the intimate union of the interlocking threads, andrenders the structure substantially homogeneous in efl'ect whilepossessing '-all the advantage of the assemblage of parts.

The blades themselves provide for circulation therethrough and, by theprovision of projections, expose a large heat dissemi nating area in thepath of travel of circulating air. a The advantages of the bladestructures are, in a measure, retained if the blades be shrunk, brazedor otherwise secured on the cylinder body,

While I have herein described in some detail specific embodiments of myinvention, which I believe to be newand advantageous,

it will be apparent to those skilled in the art that other changes mightbe made in the s ecific construction without departure .from t e spiritand scope'of' my invention.

" Having thus described myinvention, what I claim and desire to secureby Letters Patent of the United States, is:

1. The combination with an exteriorly screw-threaded cylinder body, of aseries of annular blades and a series of soft metal washers, the membersof one of said series being enlargled adjacent the cylinder body andscrew-t readed to embrace a plurality of the threads of the cylinderbody, and the members of both of said series bein screwed over thecylinder in alternating re ation.

2. In a structure of the character described, the combination of acylinder body providing on its outer surface uniformly-spaced, reatively fine pitch, screw-threads, said threads having an electroplatedcoat of metal thereover, and separable parts including a series ofindependent annular blades having portions struck therefrom to formair-circulation apertures and heat-dis tributing projections, each saidblade having interior screw-threads corresponding with the threads ofthe cylinder and having an electroplated coat of metal thereover, and aseries of soft metal washers each having an electroplated coat of metalthereover, the members of both of said series being screwed over thecylinder in alternating relation and having a uniting electroplated coatof metal applied thereto after they have been assembled.

In testimony whereof I hereunto set my hand in the presence oftwowitnesses.

, JOHN W. HASBURG. In the presence of Gno. T. MAY, J12, MARY F. ALLEN.

